Photo
byU.S.Geological
Survey
CRATER OF CASTLE GEYSER: YELLOWSTONE PARK
"Of the 84 geysers in the park, no two are alike in their characteristics. The Constant Geyser,
intheNorris
Basin,
sends
forth
graceful
jets
of water to a height of about 20 feet at intervals of one minute, while the Giant Geyser, in the
Upper
Geyser
Basin,
isineruption
atintervals
of from five to seven days" (page 531).